We can work out the area of a shape by first splitting it into smaller shapes and then finding the sum of the smaller shape's areas.
What is the area of Rectangle 1?
What is the area of Rectangle 2?
What is the area of the rectangle formed by joining these two rectangles side by side?
The total area of this shape is $75$75 cm2.
If the area of rectangle $A$A is $27$27 cm2, what is the area of rectangle $B$B?
The total area of this shape is $74$74 cm2.
If the area of rectangle $B$B is $46$46 cm2, what is the area of rectangle $A$A?
A flowerbed can be separated into two parts, $A$A and $B$B.